US3091874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed excavating machine
Assignee: Caterpillar Inc
•
Filing: 1961-05-03
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Granted: 1963-06-04
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Expires: 1981-05-03
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Wuigk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/181; E02F3/185; E02F3/22; E02F3/24; E02F3/248; Y; Y10; Y10S; Y10S37/00; Y10S37/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN EXCAVATOR OF THE KIND DESCRIBED COMPRISING A MOBILE UNIT, A MANEUVERABLE BOOM CARRIED THERBY, A SHAFT EXTENDING TRANSVERSELY OF THE BOOM ADJACENT ITS OUTER END, TWO POWER DRIVEN BUCKET WHEELS MOUNTED FOR ROTATION ON THE SHAFT ONE AT EACH SIDE OF THE BOOM, AND BUCKETS SPACED PERIPHERALLY OF THE WHEELS AND HAVING CUTTING EDGES WHICH EXTEND OUTWARDLY WITH RESPECT TO THE BOOM AT LEAST AS FAR AS THE ENDS OF THE SHAFT AND THE OUTERERMOST SURFACES OF THE WHEELS.
Claim 2
Dependent Claim
80 words
AN EXCAVATOR OF THE KIND DESCRIBED COMPRISING A MOBILE UNIT, A MANEUVERABLE BOOM CARRIED THERBY, A SHAFT EXTENDING TRANSVERSELY OF THE BOOM ADJACENT ITS OUTER END, TWO POWER DRIVEN BUCKET WHEELS MOUNTED FOR ROTATION ON THE SHAFT ONE AT EACH SIDE OF THE BOOM, AND BUCKETS SPACED PERIPHERALLY OF THE WHEELS AND HAVING CUTTING EDGES WHICH EXTEND OUTWARDLY WITH RESPECT TO THE BOOM AT LEAST AS FAR AS THE ENDS OF THE SHAFT AND THE OUTERERMOST SURFACES OF THE WHEELS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |